Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of FRIDAY: APRIL 25 , 2008 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 -M 14.3 * -M 23.8 * COTTONWOOD CREEK 7670 26.6 21.6 123 27.9 31.1 90 GRAND TARGHEE 9260 53.4 -M * 37.3 -M * GRANITE CREEK 6770 18.0 14.6 123 24.6 21.9 112 GRASSY LAKE 7265 39.9 35.3 113 47.0 40.0 118 GROS VENTRE SUMMIT 8750 13.4 14.1 95 15.3 14.8 103 GUNSIGHT PASS 9820 12.9 -M * 16.1 -M * LEWIS LAKE DIVIDE 7850 39.3 35.9 109 40.5 40.8 99 PHILLIPS BENCH 8200 36.1 30.4 119 37.7 32.4 116 SALT RIVER SUMMIT 7760 13.5 12.5 108 17.6 21.1 83 SNAKE RIVER STATION 6920 20.4 14.6 140 30.0 25.0 120 SPRING CREEK DIVIDE 9000 23.4 28.9 81 26.0 29.6 88 THUMB DIVIDE 7980 19.8 16.7 119 22.6 21.4 106 TOGWOTEE PASS 9580 29.7 27.6 108 32.5 28.1 116 TWO OCEAN PLATEAU 9240 41.7 31.6 132 35.1 31.2 112 WILLOW CREEK 8380 34.9 31.6 110 41.4 36.6 113 ----- ----- Basin wide percent of average 113 106 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 27.5 25.7 107 26.2 22.8 115 BLACK BEAR 8170 47.1 40.6 116 46.5 44.9 104 CANYON 7870 19.1 12.3 155 22.7 17.3 131 FISHER CREEK 9100 44.6 37.7 118 41.9 40.9 102 MADISON PLATEAU 7750 33.5 25.3 132 35.2 29.9 118 NORTHEAST ENTRANCE 7350 10.3 8.4 123 14.9 14.4 103 PARKER PEAK 9400 30.3 24.2 125 26.7 18.8 142 SYLVAN LAKE 8420 23.5 23.9 98 29.2 24.0 122 THUMB DIVIDE 7980 19.8 16.7 119 22.6 21.4 106 TWO OCEAN PLATEAU 9240 41.7 31.6 132 35.1 31.2 112 WHISKEY CREEK 6800 20.3 16.5 123 27.1 23.6 115 WHITE MILL 8700 30.3 26.3 115 30.1 30.4 99 WOLVERINE 7650 10.2 8.5 120 15.2 14.7 103 ----- ----- Basin wide percent of average 120 112 WIND RIVER BURROUGHS CREEK 8750 17.1 14.4 119 20.3 18.7 109 COLD SPRINGS 9630 6.0 5.1 118 11.2 13.2 85 DEER PARK 9700 16.6 19.5 85 22.2 25.9 86 HOBBS PARK 10100 15.7 17.6 89 17.0 16.0 106 LITTLE WARM 9370 10.7 11.8 91 15.4 16.1 96 SOUTH PASS 9040 15.2 18.1 84 19.2 21.8 88 ST. LAWRENCE ALT 8620 6.2 6.4 97 9.3 11.3 82 TOGWOTEE PASS 9580 29.7 27.6 108 32.5 28.1 116 TOWNSEND CREEK 8700 9.0 9.6 94 13.6 14.7 93 ----- ----- Basin wide percent of average 97 97 BIGHORN BASIN BALD MTN. 9380 18.3 22.9 80 17.4 20.5 85 BEAR TRAP MEADOW 8200 7.7 3.0 257 10.5 10.3 102 BLACKWATER 9780 29.0 27.9 104 26.7 23.9 112 BONE SPRINGS DIV 9350 19.7 17.9 110 19.8 17.5 113 EVENING STAR 9200 33.2 32.7 102 37.5 29.0 129 GRAVE SPRINGS 8550 10.9 10.9 100 11.8 12.5 94 KIRWIN 9550 13.9 12.7 109 16.2 13.6 119 MARQUETTE 8760 8.8 10.7 82 12.0 12.8 94 MIDDLE POWDER 7760 13.4 14.2 94 11.0 15.0 73 OWL CREEK 8975 3.4 4.1 83 8.0 7.7 104 POWDER RIVER PASS 9480 13.3 11.2 119 16.2 15.0 108 SHELL CREEK 9580 18.0 16.5 109 17.5 16.0 109 SYLVAN LAKE 8420 23.5 23.9 98 29.2 24.0 122 SYLVAN ROAD 7120 13.0 9.6 135 23.1 19.9 116 TIMBER CREEK 7950 5.0 5.0 100 9.3 9.7 96 YOUNTS PEAK 8350 18.5 18.1 102 19.4 18.3 106 ----- ----- Basin wide percent of average 103 107 SHOSHONE RIVER BLACKWATER 9780 29.0 27.9 104 26.7 23.9 112 EVENING STAR 9200 33.2 32.7 102 37.5 29.0 129 KIRWIN 9550 13.9 12.7 109 16.2 13.6 119 MARQUETTE 8760 8.8 10.7 82 12.0 12.8 94 SYLVAN LAKE 8420 23.5 23.9 98 29.2 24.0 122 SYLVAN ROAD 7120 13.0 9.6 135 23.1 19.9 116 YOUNTS PEAK 8350 18.5 18.1 102 19.4 18.3 106 ----- ----- Basin wide percent of average 103 116 POWDER-TONGUE BEAR TRAP MEADOW 8200 7.7 3.0 257 10.5 10.3 102 BIG GOOSE 7990 10.4 12.3 85 14.3 12.1 118 BONE SPRINGS DIV 9350 19.7 17.9 110 19.8 17.5 113 BURGESS JUNCTION 7880 14.8 13.2 112 16.2 14.7 110 CLOUD PEAK RESERVOIR 9860 17.3 15.9 109 17.7 16.1 110 DOME LAKE 8880 13.0 13.5 96 17.3 16.0 108 GRAVE SPRINGS 8550 10.9 10.9 100 11.8 12.5 94 HANSEN SAWMILL 8360 5.9 5.1 116 10.8 10.3 105 MIDDLE POWDER 7760 13.4 14.2 94 11.0 15.0 73 POWDER RIVER PASS 9480 13.3 11.2 119 16.2 15.0 108 SUCKER CREEK 8880 16.3 13.3 123 19.2 16.5 116 TIE CREEK 6870 7.7 5.0 154 13.7 12.7 108 ----- ----- Basin wide percent of average 111 106 BELLE FOURCHE BLIND PARK 6890 5.8 5.5 105 12.7 13.5 94 COLE CANYON 5910 5.8 6.1 95 9.5 8.7 109 NORTH RAPID CREEK 6130 8.3 6.4 130 11.2 10.6 106 ----- ----- Basin wide percent of average 111 102 UPPER N. PLATTE RIVER COLUMBINE 9160 26.3 22.9 115 31.5 28.4 111 DIVIDE PEAK 8880 24.0 20.5 117 26.5 23.6 112 ELK RIVER 8700 22.9 17.3 132 25.6 22.4 114 JOE WRIGHT 10120 27.0 24.7 109 31.7 29.0 109 NORTH FRENCH CREEK 10130 32.8 34.1 96 33.3 28.6 116 OLD BATTLE 10000 37.9 36.1 105 44.2 38.8 114 SAGE CREEK BASIN 7850 16.7 11.9 140 19.2 13.7 140 SOUTH BRUSH CREEK 8440 12.3 12.3 100 19.3 19.3 100 TOWER 10500 47.6 51.5 92 46.0 43.9 105 WEBBER SPRINGS 9250 28.8 25.9 111 34.7 30.3 115 WILLOW CREEK PASS 9540 20.2 14.2 142 18.8 15.1 125 ----- ----- Basin wide percent of average 109 113 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 22.9 28.1 81 25.3 26.0 97 CASPER MTN. 7900 13.9 17.6 79 16.5 18.5 89 DEADMAN HILL 10220 19.8 19.3 103 22.0 20.1 109 DEER PARK 9700 16.6 19.5 85 22.2 25.9 86 LAPRELE CREEK 8375 7.0 8.5 82 13.3 15.6 85 RENO HILL 8400 14.2 15.7 90 18.4 19.1 96 ROACH 9700 20.4 18.6 110 25.1 21.6 116 SAND LAKE 10050 32.1 36.4 88 33.1 28.2 117 SOUTH PASS 9040 15.2 18.1 84 19.2 21.8 88 WINDY PEAK 7900 7.8 6.3 124 11.7 12.8 91 ----- ----- Basin wide percent of average 90 99 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.1 6.2 179 18.6 18.0 103 DIVIDE PEAK 8880 24.0 20.5 117 26.5 23.6 112 OLD BATTLE 10000 37.9 36.1 105 44.2 38.8 114 SANDSTONE RS 8150 16.5 11.4 145 23.8 21.2 112 WHISKEY PARK 8950 38.8 30.7 126 39.7 32.7 121 ----- ----- Basin wide percent of average 122 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 13.4 14.6 92 14.6 15.4 95 BLIND BULL SUM 8650 28.0 28.5 98 19.4 24.7 79 EAST RIM DIVIDE 7930 9.5 13.8 69 12.1 13.5 90 ELKHART PARK G.S. 9400 11.4 13.6 84 12.6 15.4 82 GROS VENTRE SUMMIT 8750 13.4 14.1 95 15.3 14.8 103 GUNSIGHT PASS 9820 12.9 -M * 16.1 -M * KENDALL R.S. 7740 11.2 11.8 95 14.9 16.1 93 LOOMIS PARK 8240 16.1 15.7 103 19.3 19.4 99 NEW FORK LAKE 8340 9.2 9.9 93 10.1 12.9 78 SNIDER BASIN 8060 13.5 13.9 97 15.4 18.1 85 SPRING CREEK DIVIDE 9000 23.4 28.9 81 26.0 29.6 88 TRIPLE PEAK 8500 26.0 25.1 104 31.4 27.9 113 ----- ----- Basin wide percent of average 92 92 LOWER GREEN RIVER HAMS FORK 7840 11.5 7.7 149 11.7 14.2 82 HEWINTA 9519 15.1 10.8 140 19.1 17.2 111 HICKERSON PARK 9145 6.3 7.0 90 11.1 9.7 114 HOLE-IN-ROCK 9150 6.2 5.9 105 11.7 9.3 126 INDIAN CREEK 9425 27.4 29.3 94 -M 28.8 * KELLEY R.S. 8180 15.8 15.6 101 19.6 23.0 85 STEEL CREEK PARK 10200 18.7 18.2 103 21.1 19.6 108 ----- ----- Basin wide percent of average 107 101 UPPER BEAR RIVER BUG LAKE 7950 18.5 20.0 92 18.6 21.8 85 HAYDEN FORK 9212 17.9 14.8 121 25.8 24.4 106 KELLEY R.S. 8180 15.8 15.6 101 19.6 23.0 85 LILY LAKE 9156 15.8 12.8 123 20.1 20.5 98 MONTE CRISTO 8960 31.8 29.6 107 29.0 29.3 99 SALT RIVER SUMMIT 7760 13.5 12.5 108 17.6 21.1 83 TRIAL LAKE 9992 24.5 26.6 92 26.9 28.6 94 ----- ----- Basin wide percent of average 104 93 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. Contact your state water supply staff for assistance. Reference period for average conditions is 1961-90. Provisional data, subject to revision. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.